Reasons Your Eyelashes Are Falling Out

August 28, 2026

Losing a few eyelashes from time to time is normal. Like the hair on your scalp, lashes grow, rest, shed, and replace themselves in a natural cycle. You may notice an occasional lash on your pillow, towel, or makeup pad without anything being wrong.

But if your eyelashes are falling out more than usual, look noticeably thinner, or develop patchy gaps, there may be an underlying cause worth checking. The medical term madarosis refers to partial or complete loss of eyelashes or eyebrows.^[1] Eyelash loss can happen for many reasons, from eyelid inflammation and irritation to autoimmune conditions or repeated mechanical damage.

Here are five common causes to know.

1. Blepharitis and Eyelid Inflammation

Blepharitis is inflammation along the edge of the eyelid, close to where the eyelashes grow.^[2] It can affect the lash follicles and may contribute to shedding or abnormal lash growth.

Other signs can include redness, burning, itching, crusting or flakes around the lash line, watery eyes, or a gritty sensation.

A warm compress can help loosen debris around the lashes, followed by gentle cleansing of the eyelid margin. Avoid harsh scrubbing and consider pausing eye makeup while the area is irritated. If symptoms persist, keep returning, or become painful, see an optometrist or ophthalmologist.

madarosis

2. Irritation, Allergies, and Cosmetic Products

The skin around the eyes is thin and sensitive. Makeup, eye creams, lash serums, makeup removers, contact lens solutions, and false-lash adhesives can sometimes cause irritation or contact dermatitis.^[3]

The irritation itself, along with repeated rubbing or scratching, can contribute to lash shedding. False lashes and extensions may also stress natural lashes, especially when adhesive irritates the skin or removal is aggressive.

If eyelash loss starts after introducing a new eye-area product, stop using the suspected product and give the skin time to recover. Seek medical advice if redness, swelling, itching, or discomfort continues.

3. Alopecia Areata

Alopecia areata is an autoimmune condition in which the immune system attacks hair follicles. It commonly causes smooth, patchy hair loss on the scalp, but it can also affect the eyebrows and eyelashes.

Lash loss may appear as a defined gap rather than general thinning, and some people notice eyebrow or scalp hair loss at the same time. Because alopecia areata is immune-related, eyelid hygiene alone will not treat it.

If you develop sudden patchy eyelash loss, especially with hair loss elsewhere, a dermatologist or other healthcare professional can assess the cause and discuss treatment options.

4. Trichotillomania and Mechanical Damage

Trichotillomania is a condition involving repeated urges to pull out hair. Eyelashes can be affected because they are easy to reach. The result may be uneven lash lengths, broken hairs, or irregular patches.

Mechanical damage can also happen without trichotillomania. Frequent rubbing, forceful makeup removal, eyelash curlers, extensions, and pulling at false lashes can all stress natural lashes.

If pulling is difficult to control, treatment often focuses on behavioral support. Reducing unnecessary rubbing and handling can also help protect remaining lashes.

5. Medications and Underlying Health Conditions

Sometimes eyelash loss is related to a broader health issue rather than the eyelid itself. Certain medications and medical conditions can affect normal hair growth. Nutritional problems, endocrine disorders, autoimmune disease, infection, and other systemic conditions may also contribute.

Persistent or unexplained thinning should not automatically be blamed on cosmetics or aging. If lash loss continues without an obvious local cause, a healthcare professional may ask about other symptoms, medications, and changes in your overall health.

Do Eyelashes Grow Back?

In many cases, yes.^[4] Regrowth is generally more likely when the hair follicle has not been permanently damaged. Once temporary inflammation, irritation, or mechanical stress is controlled, lashes may gradually return through their normal growth cycle.

However, regrowth depends on the underlying cause. Conditions that scar or permanently damage follicles can limit future growth, while autoimmune conditions may have a less predictable course.

Prescription bimatoprost 0.03% can be used for eyelash hypotrichosis to increase lash length, thickness, and darkness. It does not correct underlying causes such as active blepharitis or alopecia areata and can have side effects, so it should be discussed with a healthcare professional.

When Should You See a Doctor?

Make an appointment if eyelash loss is persistent, worsening, clearly patchy, or accompanied by eyebrow or scalp hair loss. Also seek medical advice for ongoing redness, crusting, swelling, or an unusual eyelid lump.

Seek urgent care for significant eye pain, severe swelling, or sudden changes in vision.

Final Thoughts

Eyelash loss is not always a cause for concern, but persistent thinning or gaps deserve attention. Blepharitis, irritation, alopecia areata, repeated pulling, and underlying health conditions can all affect the lashes. Identifying the cause is more useful than simply trying to stimulate growth, because the right treatment depends on what is disrupting the lash cycle.